Mercedes-Benz R-Class W251 (2006-2013) reliability
Mercedes-Benz R-Class W251 built around 2013: not enough MOT data yet
We've only seen a handful of Mercedes-Benz R-Class W251 models built around 2013 so far. Too few to spot a pattern yet.
Looking at a Mercedes-Benz R-Class W251?
Enter its number plate to see its full MOT history, risk rating and running costs.
Key figure
Check a car’s number plate to see its own MOT record, or come back when there’s more MOT history.

Based on 2,018 tests of R-Class models registered 2006-2013.
W251 fail rate by age
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs. Highest fail rate at 16 years old.
How the R-Class W251 compares
At each age below, see how the R-Class W251 holds up against other cars the same age. The averages combine all fuel types.
Based on 92,872 tests across 15 Mercedes-Benz models, built around 2013 (12 years old).
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs.
What to check before viewing
The model's most common MOT issues, turned into things you can ask about or look for.
Brake pipes and hoses
High priorityLook under the car for corrosion or chafing on the rigid brake pipes near the rear axle.
Tyres
Worth checkingCheck tread depth across the full width on all four; uneven wear suggests alignment or suspension issues.
Leaks
Worth checkingInspect the leaks carefully and ask the seller for repair history.
Drivetrain
Worth checkingInspect the drivetrain carefully and ask the seller for repair history.
Suspension bushes and joints
Worth checkingListen for knocks over speed bumps and ask about recent control-arm or anti-roll-bar work.
Vehicle-specific check
Worth checkingCheck the car’s number plate on MOT Wise to see its own MOT history and any recalls for its build years.
Other people carriers to compare
Other people carriers, with each one's figures taken at the same age as the R-Class W251.
- 1

Toyota Estima
Same body type, tested at the same age
- Fail rate
- 15.7%
- Fail, no pass in 3 days
- 3.3%
- Dangerous
- 3.5%
Lower fail rate: 15.7%, against 19.0% for the Mercedes-Benz R-Class W251, both built around 2013.
2,066 MOT tests on cars built around 2013
- 2

Ford B-MAX
Same body type, tested at the same age
- Fail rate
- 27%
- Fail, no pass in 3 days
- 4.4%
- Dangerous
- 5.8%
- Still registered at 10 years
- 96.2%
No clear edge over the Mercedes-Benz R-Class W251 on these figures.
14,588 MOT tests on cars built around 2013
- 3

Skoda Roomster
Same body type, tested at the same age
- Fail rate
- 24.4%
- Fail, no pass in 3 days
- 3.9%
- Dangerous
- 5.5%
- Still registered at 10 years
- 96.4%
No clear edge over the Mercedes-Benz R-Class W251 on these figures.
3,044 MOT tests on cars built around 2013
- 4

Toyota Verso
Same body type, tested at the same age
- Fail rate
- 24.6%
- Fail, no pass in 3 days
- 3.9%
- Dangerous
- 5.2%
- Still registered at 10 years
- 90%
No clear edge over the Mercedes-Benz R-Class W251 on these figures.
2 critical recall campaigns matching this model/build period.
3,961 MOT tests on cars built around 2013
- Fail rate
- = the share of MOT tests that ended in a fail. Retests count as tests.
- Fail, no pass in 3 days
- = the share of MOT tests that failed and still hadn't passed 3 days later. A fail that passed a retest within 3 days, even the same day, isn't counted.
- Dangerous
- = the share of MOT tests where the tester marked a fault as dangerous. It is against the law to drive the car until it is fixed.
- Still registered at 10 years
- = the share of cars still registered (taxed or declared off the road) 10 years after they were first registered.
Recall context
12 recalls in all5 of the 12 R-Class W251 recalls cover cars built in these years.
- 5 recalls
Top concerns
- The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.
- The driver's air bag may have a chemical change to its propellant over time
- Fuel may leak
For the exact car, check GOV.UK's recall checker with the number plate.
How R-Class W251 cars have aged
How R-Class W251 cars have aged
How fail rates have changed as these cars got older. Each line follows cars first registered in about the same year across several years of MOT data. Not a prediction for any one car.
W251 variants compared
Most common issues on Mercedes-Benz R-Class models of this age
This list covers every Mercedes-Benz R-Class built around 2013, whichever generation it is. We don't have a defect list for the W251 on its own.
Most common advisories and fails
In order of the share of MOT tests that recorded each one
- 118.2%Advisory
Tyre worn close to the legal limit or worn on the edge
- 215.5%Advisory
Oil leak, but not excessive
- 311.2%Minor
Drive shaft joint cover badly deteriorated
- 410.8%Advisory
Brake pipe corroded or covered in grease
- 55.4%Major
Drive shaft joint cover split and no longer keeps dirt out
Based on 258 tests
Looking at a Mercedes-Benz R-Class W251?
Enter its number plate to see its full MOT history, risk rating and running costs.
Frequently asked questions
Built around 2013 (12 years old), the Mercedes-Benz R-Class W251 (2006-2013) fails MOTs noticeably less often than typical for this age. This is based on 258 12-year-old MOT tests from DVSA data. Each retest counts as a test.